CN104632952B - Electromagnetic brake - Google Patents
Electromagnetic brake Download PDFInfo
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- CN104632952B CN104632952B CN201310545658.6A CN201310545658A CN104632952B CN 104632952 B CN104632952 B CN 104632952B CN 201310545658 A CN201310545658 A CN 201310545658A CN 104632952 B CN104632952 B CN 104632952B
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- hollow metal
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- permanent magnet
- metal block
- magnetic field
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Abstract
The invention discloses an electromagnetic brake. The electromagnetic brake comprises two hollow metal blocks serving as clamping blocks for clamping a clamped object, wherein the two hollow metal blocks are respectively arranged at the two sides of the clamped object; a permanent magnet is arranged in one of the hollow metal blocks; coils are wound on the externals of the permanent magnets; when the coils are electrified, magnetic fields opposite to the wound permanent magnets can be generated so as to achieve a demagnetization effect on the permanent magnets; when the coils are disconnected, the magnetic fields of the permanent magnets generate attraction for the clamped object, so that the hollow metal blocks are absorbed on the clamped object to generate a braking effect; when the coils are electrified, the magnetic fields generated by the coils are counteracted with the magnetic fields of the permanent magnets; and the hollow metal blocks loose the clamped object under the effect of external force. The electromagnetic brake uses the characteristics of attraction, repulsion and demagnetization of the magnets for realizing a function of clamping or loosing the clamped object, so that an elevator can brake to be out of danger. When the elevator is stalled or disconnected, the electromagnetic brake can enable the elevator to safely and reliably brake and stop.
Description
Technical field
The present invention relates to a kind of electromagnetic brake.
Background technology
Existing brake fully relies on frame for movement and carrys out the action that control brake is clamped, unclamps, elevator by
Cause stall in fault or because the outer thus dangerous pinning elevator that in emergency circumstances plays makes it stop, extensive in elevator
Unclamp, after multiple, the function of making elevator motion.
Existing brake, after frame for movement lost efficacy, elevator cannot jerk in emergency situations；And frame for movement
There is certain loss, its service life is also relatively short.
Content of the invention
The technical problem to be solved is to provide a kind of electromagnetic brake, and it can improve elevator safety part
Safety, reliability and service life.
For solving above-mentioned technical problem, the technical solution of electromagnetic brake of the present invention is：
Including two hollow metal blocks as clamping caught object fixture block, two hollow metal blocks be respectively arranged at by
The both sides of folder object；Each hollow metal block is built-in with a permanent magnet, and the outside of permanent magnet is wound with coil；Work as coil electricity
When, the magnetic field contrary with the permanent magnet being wound around can be produced, play the demagnetizing action to permanent magnet；When the coil is de-energized, permanent magnetism
The magnetic field of body produces captivation to caught object, so that hollow metal block is adsorbed on caught object, produces braking action；Work as coil
During energising, magnetic field produced by coil is offseted with the magnetic field of permanent magnet, and hollow metal block unclamps in the presence of external force and pressed from both sides
Object.
Lines is carved with the surface of described hollow metal block, to increase the frictional force between hollow metal block and caught object.
Described hollow metal block connects the two ends of compression spring respectively；When two hollow metal blocks clamp caught object,
Compression spring is compressed, and produces described external force.
The outside of described hollow metal block is provided with an edge permanent magnet, in the magnetic field of edge permanent magnet and hollow metal block
The magnetic field phase of permanent magnet is repelled；The magnetic field of edge permanent magnet produces described external force.
External connection one extension spring of described hollow metal block, extension spring is used for providing hollow metal block to unclamp is pressed from both sides
Required pulling force f during object is as described external force；Each coils from parallel connection of coils one electric capacity；When externally fed is cut off, electric capacity is to line
Circle provide continuation of the journey electric current, now coil produce magnetic field can only partial offset permanent magnet produce magnetic field, hollow metal block can be right
Caught object produces deceleration captivation F1 being more than pulling force f so that hollow metal block adsorbs on caught object；Coil
Normally closed switch is set in circuit；The flashboard of two normally closed switch connects a pressing plate；After pressing plate is subject to a pressure N, it will often make
Close and switch off, make coil blackout.
When described coil outer is powered cut-off, the first stage, electric capacity is in discharge condition, and electric capacity provides continuation of the journey to coil
Electric current, because the voltage of electric capacity release is less than voltage during outside energising, the magnetic field that therefore coil produces can only partial offset forever
The magnetic field that magnet produces, now hollow metal block can be to caught object one deceleration captivation F1 of generation, due to deceleration captivation
F1>Spring tension f, hollow metal block adsorbs on caught object, and hollow metal block is clamped caught object and so that car is slowed down；The
Two-stage, due to brake and caught object friction, the weight of car can be pressed on the brake gradually, and pressing plate makes the normally closed of coil
Switch off, make coil blackout, stop producing magnetic field；The magnetic field that in hollow metal block, permanent magnet produces makes hollow as fixture block
Metal derby produces clamping captivation F2 to caught object, clamps captivation F2>Deceleration captivation F1>Spring tension f, now
Hollow metal block can tightly adsorb on caught object, clamps caught object, produces braking action.
What the present invention can reach has the technical effect that：
When elevator is due to fault（As traction machine brake inefficacy, steel wire rope disconnection etc.）Or external cause（As power failure, earthquake
Deng）When out of control, the present invention utilizes attraction, repulsion and the erasing characteristics of magnet, realizes clamping or the function of unclamping caught object, makes
Elevator can be braked and out of danger.When elevator stall or power failure, the present invention can make elevator safety, reliably be braked
And stop.
The present invention can extend the service life of brake, improves the safety and reliability of elevator safety part.
Brief description
The present invention is further detailed explanation with reference to the accompanying drawings and detailed description：
Fig. 1 is the schematic diagram of the first embodiment of electromagnetic brake of the present invention；
Fig. 2 is the clamping schematic diagram of the first embodiment of the present invention；
Fig. 3 be the first embodiment of the present invention unclamp schematic diagram；
Fig. 4 is the schematic diagram of the second embodiment of the present invention；
Fig. 5 is the schematic diagram of the third embodiment of the present invention；
Fig. 6 is the fundamental diagram of the third embodiment of the present invention；
Fig. 7 is the installation site figure of the present invention.
In figure description of reference numerals：
1 is permanent magnet, and 2 is edge permanent magnet,
3 is hollow iron block, and 4 is coil,
5 is stiff rod, and 6 is compression spring,
7 is external shell, and 8 is pressing plate,
9 is connecting rod and spring, and 10 is extension spring,
11 is normally closed switch, and 12 is electric capacity,
13 is fastening spring, and 14 is metal fixture block,
15 is metal derby, and 16 is caught object,
18 is traction machine, and 19 is electromagnetic brake,
20 is car, and 21 is rope sheave,
22 is counterweight.
Specific embodiment
It is illustrated in figure 1 the first embodiment of electromagnetic brake of the present invention, including two hollow iron blocks 3 as clamping quilt
Folder object 16 uses fixture block, and each hollow iron block 3 is built-in with a permanent magnet 1, and the outside of permanent magnet 1 is wound with coil 4；When coil 4
During energising, the magnetic field contrary with the permanent magnet 1 being wound around can be produced, play the demagnetizing action to permanent magnet 1；
Hollow iron block 3 connects stiff rod 5, and two stiff rods 5 connect the two ends of compression spring 6 respectively；Hollow iron block 3 and stiff rod 5,
Compression spring 6 is arranged in external shell 7；Two hollow iron blocks 3 are arranged at caught object 16（As metal guide rail）Both sides；When
During two hollow iron block 3 clamping caught objects 16, compression spring 6 is compressed；
Lines is carved with the surface of hollow iron block 3, to increase the frictional force between hollow iron block 3 and caught object 16.
When elevator stall, limiter of speed transmission signal, to panel, is powered by panel cutout brake, is made coil 4
Power-off, because permanent magnet 1 carries magnetic force, the magnetic field of permanent magnet 1 produces captivation to caught object 16, makes hollow as fixture block
Iron block 3 adsorbs on caught object 16, produces braking action, as shown in Figure 2；
After elevator recovers, panel recovers brake and powers, and so that coil 4 is energized, and coil 4 produces contrary with permanent magnet 1
Magnetic field, two magnetic fields offset, and the hollow iron block 3 as fixture block loses magnetic force, because compression spring 6 is pressed from both sides in hollow iron block 3
Compressed during tight caught object 16, now can produce a bounce, make hollow iron block 3 unclamp caught object 16, elevator can enter
Row moves, as shown in Figure 3；
When elevator power failure, brake is powered cut-off, and now manner of execution is consistent with during elevator stall.
It is illustrated in figure 4 the second embodiment of electromagnetic brake of the present invention, including two hollow iron blocks 3 as clamping quilt
Folder object 16 uses fixture block, and each hollow iron block 3 is built-in with a permanent magnet 1, and the outside of permanent magnet 1 is wound with coil 4；When coil 4
During energising, the magnetic field contrary with the permanent magnet 1 being wound around can be produced, play the demagnetizing action to permanent magnet 1；
The outside of each hollow iron block 3 is respectively arranged with an edge permanent magnet 2, the magnetic field of edge permanent magnet 2 and cored iron
In block 3, the magnetic field phase of permanent magnet 1 is repelled；
Lines is carved with the surface of hollow iron block 3, to increase the frictional force between hollow iron block 3 and caught object 16.
When elevator stall, limiter of speed transmission signal, to panel, is powered by panel cutout brake, is made coil 4
Power-off, the magnetic field that in hollow iron block 3, permanent magnet 1 produces makes to adsorb as the hollow iron block 3 of fixture block on caught object 16, produces
Braking action, as shown in Figure 2；
After elevator recovers, panel recovers brake and powers, and so that coil 4 is energized and produces the magnetic field contrary with permanent magnet 1,
By the magnetic field cancellation of permanent magnet 1, the hollow iron block 3 as fixture block loses magnetic force, now due to the captivation of edge permanent magnet 2,
Hollow iron block 3 is made to unclamp caught object 16, elevator can move, as shown in Figure 3；
When elevator power failure, brake is powered cut-off, and now manner of execution is consistent with during elevator stall.
It is illustrated in figure 5 the 3rd embodiment of electromagnetic brake of the present invention, including two hollow iron blocks 3 as clamping quilt
Folder object 16 uses fixture block, and each hollow iron block 3 is built-in with a permanent magnet 1, and the outside of permanent magnet 1 is wound with coil 4；When coil 4
During energising, the magnetic field contrary with the permanent magnet 1 being wound around can be produced, play the demagnetizing action to permanent magnet 1；
It is connected an extension spring 10 respectively, for providing hollow iron block 3 pine between two hollow iron blocks 3 and external shell 7
Open required pulling force f during caught object 16；
Each coil 4 is connected in parallel with a capacitor 12；When externally fed is cut off, electric capacity 12 can provide continuation of the journey to coil 4
Electric current, the magnetic field now being produced due to coil 4 can only the magnetic field that produces of partial offset permanent magnet 1, hollow iron block 3 can be to clipped object
Body 16 produces deceleration captivation F1, and F1 is more than pulling force f so that hollow iron block 3 adsorbs on caught object 16, clamps and is pressed from both sides
Object 16 simultaneously produces frictional force, so that car is slowed down；
Normally closed switch 11 is set in the circuit of coil 4；The flashboard of two normally closed switch 11 passes through connecting rod and spring 9 connects one
Pressing plate 8；After pressing plate 8 is subject to a pressure N, it will so that normally closed switch 11 is disconnected, now coil 4 will lose electric current, stop producing
Magnetic field；
Lines is carved with the surface of hollow iron block 3, to increase the frictional force between hollow iron block 3 and caught object 16.
As shown in fig. 6, when elevator normally runs, the outside energising generation of coil 4 magnetic field contrary with permanent magnet 1, two
Magnetic field offsets, and the hollow iron block 3 as fixture block loses magnetic force, will not produce captivation to caught object 16, and hollow iron block 3
It is stretched the active force of spring 10, hollow iron block 3 unclamps caught object 16 makes elevator normally run；Now electric capacity 12 is in and fills
Electricity condition；
When elevator faults, limiter of speed transmission signal, to panel, is powered by panel cutout brake；Or when electricity
When ladder has a power failure, brake is powered cut-off；Two kinds of situations all make coil 4 be in outside power-off；First stage, electric capacity 12 is in be put
Electricity condition, electric capacity 12 continues to power to coil 4, because the voltage of electric capacity 12 release is less than voltage during originally outside energising, because
The magnetic field that this coil 4 produces can only the magnetic field that produces of partial offset permanent magnet 1, now hollow iron block 3 caught object 16 can be produced
Raw deceleration captivation F1, due to deceleration captivation F1>Spring tension f, hollow iron block 3 adsorbs on caught object 16, empty
Heart iron block 3 is clamped caught object 16 and so that car is slowed down；Second stage, because brake is rubbed with caught object 16, car
Weight can be pressed on the brake gradually, and pressing plate 8 makes the normally closed switch 11 of coil 4 disconnect, and makes coil 4 power-off, stops producing magnetic field；
The magnetic field that in hollow iron block 3, permanent magnet 1 produces makes, as the hollow iron block 3 of fixture block, caught object 16 is produced with a clamping attraction
Power F2, clamps captivation F2>Deceleration captivation F1>Spring tension f, now hollow iron block 3 can tightly adsorb in caught object 16
On, clamp caught object 16, produce braking action and pin car, make car stationary.
The present embodiment is the electromagnetic brake with self-locking, when elevator car speed is larger, if unexpected jerk, can produce
One larger power, makes passenger in elevator injured due to jerk；The present embodiment is applied to the elevator of larger speed.
As shown in fig. 7, electromagnetic brake 19 of the present invention may be mounted at the bottom of car 20, or the bottom of counterweight 22
Portion, or the sidepiece of traction machine 18, or the sidepiece of rope sheave 21.Caught object, according to electromagnetic brake installation site not
Change together：When electromagnetic brake is arranged on car or counterweight bottom, caught object is metal guide rail；When electromagnetic type braking
When device is arranged on traction machine, caught object is braking surface；When electromagnetic brake is arranged on rope sheave, caught object is rope
Wheel disc.
The present invention is not limited to embodiment discussed above.Description to specific embodiment is intended to retouch above
State and illustrate technical scheme according to the present invention.Obvious conversion based on present invention enlightenment or replacement should also be as being considered
Fall into protection scope of the present invention.Above specific embodiment is used for disclosing the optimal implementation of the present invention, so that this
The those of ordinary skill in field can apply the numerous embodiments of the present invention and multiple alternative to reach the present invention's
Purpose.
Claims (5)
1. a kind of electromagnetic brake it is characterised in that：Including two hollow metal blocks as clamping caught object fixture block,
Two hollow metal blocks are respectively arranged at the both sides of caught object；Each hollow metal block is built-in with a permanent magnet, permanent magnet
Outside is wound with coil；When the coil is energized, the magnetic field contrary with the permanent magnet being wound around can be produced, play and permanent magnet is disappeared
Magnetic action；
When the coil is de-energized, the magnetic field of permanent magnet produces captivation to caught object, so that hollow metal block is adsorbed in caught object
On, produce braking action；
When the coil is energized, magnetic field produced by coil is offseted with the magnetic field of permanent magnet, and hollow metal block is in the effect of external force
Under unclamp caught object；
The outside of described hollow metal block is provided with an edge permanent magnet, the magnetic field of edge permanent magnet and permanent magnetism in hollow metal block
The magnetic field phase of body is repelled；The magnetic field of edge permanent magnet produces described external force.
2. electromagnetic brake according to claim 1 it is characterised in that：Stricture of vagina is carved with the surface of described hollow metal block
Road, to increase the frictional force between hollow metal block and caught object.
3. a kind of electromagnetic brake it is characterised in that：Including two hollow metal blocks as clamping caught object fixture block,
Two hollow metal blocks are respectively arranged at the both sides of caught object；Each hollow metal block is built-in with a permanent magnet, permanent magnet
Outside is wound with coil；When the coil is energized, the magnetic field contrary with the permanent magnet being wound around can be produced, play and permanent magnet is disappeared
Magnetic action；
When the coil is de-energized, the magnetic field of permanent magnet produces captivation to caught object, so that hollow metal block is adsorbed in caught object
On, produce braking action；
When the coil is energized, magnetic field produced by coil is offseted with the magnetic field of permanent magnet, and hollow metal block is in the effect of external force
Under unclamp caught object；
External connection one extension spring of described hollow metal block, extension spring is used for providing hollow metal block to unclamp caught object
The pulling force f of Shi Suoxu is as described external force；
Each coils from parallel connection of coils one electric capacity；When externally fed is cut off, electric capacity provides continuation of the journey electric current to coil, and now coil produces
Magnetic field can only partial offset permanent magnet produce magnetic field, hollow metal block can to caught object produce one be more than pulling force f
Deceleration captivation F1 is so that hollow metal block adsorbs on caught object；
Normally closed switch is set in the circuit of coil；The flashboard of two normally closed switch connects a pressing plate；When pressing plate is subject to a pressure N
Afterwards, it will so that normally closed switch is disconnected, make coil blackout.
4. electromagnetic brake according to claim 3 it is characterised in that：Stricture of vagina is carved with the surface of described hollow metal block
Road, to increase the frictional force between hollow metal block and caught object.
5. the electromagnetic brake according to claim 3 or 4 it is characterised in that：When described coil outer power cut-off,
First stage, electric capacity is in discharge condition, and electric capacity provides continuation of the journey electric current to coil, because the voltage of electric capacity release is logical less than outside
Voltage when electric, therefore coil produce magnetic field can only partial offset permanent magnet produce magnetic field, now hollow metal block can be right
Caught object produces deceleration captivation F1, due to deceleration captivation F1>Spring tension f, the absorption of hollow metal block is being pressed from both sides
On object, hollow metal block is clamped caught object and so that car is slowed down；Second stage, due to brake and caught object friction,
The weight of car can be pressed on the brake gradually, and pressing plate makes the normally closed switch of coil disconnect, and makes coil blackout, stops producing magnetic
?；The magnetic field that in hollow metal block, permanent magnet produces makes, as the hollow metal block of fixture block, caught object is produced with a clamping suction
Gravitation F2, clamps captivation F2>Deceleration captivation F1>Spring tension f, now hollow metal block can tightly adsorb in caught object
On, clamp caught object, produce braking action.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310545658.6A CN104632952B (en) | 2013-11-06 | 2013-11-06 | Electromagnetic brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310545658.6A CN104632952B (en) | 2013-11-06 | 2013-11-06 | Electromagnetic brake |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104632952A CN104632952A (en) | 2015-05-20 |
| CN104632952B true CN104632952B (en) | 2017-02-08 |
Family
ID=53212043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310545658.6A Active CN104632952B (en) | 2013-11-06 | 2013-11-06 | Electromagnetic brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104632952B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107215745A (en) * | 2017-07-24 | 2017-09-29 | 教学客（北京）科技有限公司 | Electromagnetic buffer elevator and elevator monitoring system |
| CN107441613A (en) * | 2017-09-16 | 2017-12-08 | 无锡市人民医院 | Magnetic-type catheter fixer |
| CN109331473B (en) * | 2018-09-17 | 2020-12-08 | 安徽银升焊接材料有限公司 | Intelligent swing frame |
| CN109217629A (en) * | 2018-11-05 | 2019-01-15 | 苏州市职业大学 | Elevator ring type permanent magnet brake |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005172021A (en) * | 2003-12-08 | 2005-06-30 | Mitsubishi Electric Corp | Electromagnetic braking device |
| CN1329281C (en) * | 2003-10-27 | 2007-08-01 | 因温特奥股份公司 | Brake for an elevator |
| CN101765557A (en) * | 2007-07-25 | 2010-06-30 | 三菱电机株式会社 | elevator |
| CN103148124A (en) * | 2013-03-22 | 2013-06-12 | 哈尔滨工业大学 | Duplex-winding hybrid excitation brake |
| DE102012007863A1 (en) * | 2012-04-18 | 2013-10-24 | Ortlinghaus-Werke Gmbh | Method for controlling rotational torque on e.g. passive electromagnetic brakes in lifts, involves determining reference value for current that is applied to coil in relation to desired rotational torque for applying to coil |
| CN203560339U (en) * | 2013-11-06 | 2014-04-23 | 三菱电机上海机电电梯有限公司 | Electromagnetic type brake |
-
2013
- 2013-11-06 CN CN201310545658.6A patent/CN104632952B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1329281C (en) * | 2003-10-27 | 2007-08-01 | 因温特奥股份公司 | Brake for an elevator |
| JP2005172021A (en) * | 2003-12-08 | 2005-06-30 | Mitsubishi Electric Corp | Electromagnetic braking device |
| CN101765557A (en) * | 2007-07-25 | 2010-06-30 | 三菱电机株式会社 | elevator |
| DE102012007863A1 (en) * | 2012-04-18 | 2013-10-24 | Ortlinghaus-Werke Gmbh | Method for controlling rotational torque on e.g. passive electromagnetic brakes in lifts, involves determining reference value for current that is applied to coil in relation to desired rotational torque for applying to coil |
| CN103148124A (en) * | 2013-03-22 | 2013-06-12 | 哈尔滨工业大学 | Duplex-winding hybrid excitation brake |
| CN203560339U (en) * | 2013-11-06 | 2014-04-23 | 三菱电机上海机电电梯有限公司 | Electromagnetic type brake |
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| CN104632952A (en) | 2015-05-20 |
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